Wagner Free Institute of Science of Philadelphia

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Excerpt from Wagner Free Institute of Science of Philadelphia: Annual Announcement, Sixty-Fifth Year, Philadelphia, 1912Reflection. 'law of Re¿ection. Mirrors and Diffusing Surfaces. Plane Mirrors. 5. Friday, January 31. Reflection (continued). Curved Mirrors. Principal Focus, Conjugate Foci and Center of Curvature. Images: Real and Apparent. 6. Friday, February 7.Refraction. Passage of Light to Denser and to Rarer Media. Index of Refraction. The Angle of Total Re¿ection. 7. Friday, February 14. Refraction (continued). Lenses and Prisms. Principal Focus and Conjugate Foci of Lenses. Images by Lenses.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.